John Hart's Outputs (114)

Studies towards an amperometric phosphate ion biosensor for urine and water analysis (2010)
Journal Article

An amperometric biosensor for phosphate ion is described that is based on a cobalt phthalocyanine modified screen-printed carbon electrode (CoPC-SPCE). The biosensor operation is based on the enzyme pyruvate oxidase (PyOd) which catalyses the oxidati... Read More about Studies towards an amperometric phosphate ion biosensor for urine and water analysis.

A flow injection system, comprising a biosensor based on a screen-printed carbon electrode containing Meldola's Blue-Reinecke salt coated with glucose dehydrogenase, for the measurement of glucose (2010)
Journal Article

A biosensor for the measurement of glucose in serum has been developed, based on a screen-printed carbon electrode modified with Meldola's Blue-Reinecke salt, coated with the enzyme glucose dehydrogenase (from Bacillus sp.), and nicotinamide adenine... Read More about A flow injection system, comprising a biosensor based on a screen-printed carbon electrode containing Meldola's Blue-Reinecke salt coated with glucose dehydrogenase, for the measurement of glucose.

Development of an amperometric assay for phosphate ions in urine based on a chemically modified screen-printed carbon electrode (2009)
Journal Article

An amperometric assay for the determination of inorganic phosphate (Pi) in urine has been developed without the need for sample preparation. A screen-printed carbon electrode modified with the electrocatalyst cobalt phthalocyanine (CoPC-SPCE) and cov... Read More about Development of an amperometric assay for phosphate ions in urine based on a chemically modified screen-printed carbon electrode.

The electrochemical behavior of nitrazepam at a screen-printed carbon electrode and its determination in beverages by adsorptive stripping voltammetry (2009)
Journal Article

The cyclic voltammetric behavior of nitrazepam was investigated at screen-printed carbon electrodes over the range1.5 V to {thorn}1.5 V. Two reduction peaks were observable on the negative scan, at 0.7 V, and 1.2 V using pH 6 buffer. On the return sc... Read More about The electrochemical behavior of nitrazepam at a screen-printed carbon electrode and its determination in beverages by adsorptive stripping voltammetry.

Voltammetric and amperometric behaviour of reduced glutathione at a microband cobalt phthalocyanine modified screen-printed carbon electrode (2009)
Presentation / Conference Contribution

The voltammetric behaviour of lead at a microband screen-printed carbon electrode and its determination in acetate leachates from glazed ceramic plates (2009)
Presentation / Conference Contribution

Application of screen-printed microband biosensors to end-point measurements of glucose and cell numbers in HepG2 cell culture (2009)
Journal Article

Microband glucose biosensors were produced by insulating and sectioning through a screen-printed, water-based carbon electrode containing cobalt phthalocyanine redox mediator and glucose oxidase enzyme. Under quiescent conditions at 37 °C, at an oper... Read More about Application of screen-printed microband biosensors to end-point measurements of glucose and cell numbers in HepG2 cell culture.

A microband lactate biosensor fabricated using a water-based screen-printed carbon ink (2009)
Journal Article

The present study demonstrated for the first time that screen-printed carbon microband electrodes fabricated from water-based ink can readily detect H2O2 and that the same ink, with the addition of lactate oxidase, can be used to construct microband... Read More about A microband lactate biosensor fabricated using a water-based screen-printed carbon ink.

Fabrication of microband glucose biosensors using a screen-printing water-based carbon ink and their application in serum analysis (2009)
Journal Article

Microband glucose biosensors were fabricated by screen-printing a water-based carbon ink formulation containing cobalt phthalocyanine redox mediator and glucose oxidase (GOD) enzyme, then insulating and sectioning through the thick (20 μm) film to ex... Read More about Fabrication of microband glucose biosensors using a screen-printing water-based carbon ink and their application in serum analysis.

Part II, Ch.6, Preparation of screen-printed electrochemical immunosensors for estradiol, and their application in biological fluids (2009)
Book Chapter

The voltammetric behaviour of lead at a microband screen-printed carbon electrode and its determination in acetate leachates from glazed ceramic plates (2008)
Presentation / Conference Contribution

Determination of flunitrazepam and nitrazepam in beverage samples by liquid chromatography with dual electrode detection using a carbon fibre veil electrode (2008)
Journal Article

Both nitrazepam and flunitrazepam have been determined by high-performance liquid chromatography dual electrode detection (LC-DED) in the reductive-reductive mode, using a carbon fibre veil electrode (CFVE) in conjugation with a glassy carbon electro... Read More about Determination of flunitrazepam and nitrazepam in beverage samples by liquid chromatography with dual electrode detection using a carbon fibre veil electrode.

Monitoring indoles and diamines: A screen-printed sensors and biosensors approach (2008)
Presentation / Conference Contribution

Real-time monitoring of glucose and lactate concentrations using screen-printed microband biosensors (2008)
Presentation / Conference Contribution

Development of an anodic stripping voltammetric assay, using a disposable mercury-free screen-printed carbon electrode, for the determination of zinc in human sweat (2008)
Journal Article

This paper reports on the development of a novel electrochemical assay for Zn2+ in human sweat, which involves the use of disposable screen-printed carbon electrodes (SPCEs). Initially, SPCEs were used in conjunction with cyclic voltammetry to study... Read More about Development of an anodic stripping voltammetric assay, using a disposable mercury-free screen-printed carbon electrode, for the determination of zinc in human sweat.

Characterisation and application of screen-printed glucose and lactate mircobiosensors for use in cell metabolism studies (2008)
Presentation / Conference Contribution

Microband biosensors fabricated using a water-based carbon ink for the determination of glucose in human serum (2008)
Presentation / Conference Contribution

Determination of Trace p-nitrophenol concentrations in human urine by Liquid Chromatography Dual Electrochemical Detection (2007)
Presentation / Conference Contribution

Chapter 23 Screen-printed electrochemical (bio)sensors in biomedical, environmental and industrial applications (2007)
Journal Article

This chapter describes a number of approaches for the fabrication of prototype screen-printed electrochemical (bio) sensors together with selected applications in the areas of biomedical, environmental and industrial analyses. Novel methods of immobi... Read More about Chapter 23 Screen-printed electrochemical (bio)sensors in biomedical, environmental and industrial applications.

Voltammetric behaviour of p-nitrophenol and its trace determination in human urine by liquid chromatography with a dual reductive mode electrochemical detection system (2007)
Journal Article

The determination of trace p-nitrophenol (PNP) concentrations in human urine has been successfully achieved by high performance liquid chromatography dual electrode detection (LC-DED) in the reduction-reduction mode. Initial cyclic voltammetric studi... Read More about Voltammetric behaviour of p-nitrophenol and its trace determination in human urine by liquid chromatography with a dual reductive mode electrochemical detection system.